Le Roux, who won 54 South Africa caps, moves from Super 14 club the Cheetahs.

Departures from Leinster include Andrew Dunne who has joined Connacht and Kieran Lewis who moves to Munster.

Gomez, who had a spell on loan with Stade Franšais last season, joins from Argentine club Los Matreros and has signed a two-year deal while 54-times international capped front-rower Le Roux moves on a one-year contract.

"Roly has been one of the foremost scrummaging coaches in world rugby and I know that he has been an enormous help not just to his colleagues in the backroom teams over the years, but also to a multitude of players who have developed over the years under his expert eye," said the Leinster chief executive.